CN111055801B

CN111055801B - Multi-front airbag for vehicle and airbag deployment system employing the same

Info

Publication number: CN111055801B
Application number: CN201811463772.3A
Authority: CN
Inventors: 申孝燮; 俞周善
Original assignee: Hyundai Motor Co; Kia Motors Corp
Current assignee: Hyundai Motor Co; Kia Corp
Priority date: 2018-10-17
Filing date: 2018-12-03
Publication date: 2023-05-05
Anticipated expiration: 2038-12-03
Also published as: EP3640095B1; US10836337B2; KR20200043123A; KR102614143B1; US20200122665A1; CN111055801A; EP3640095A1

Abstract

The present disclosure provides a multiple front airbag for a vehicle and an airbag deployment system employing the same. The system includes a sensing unit that collects status information of the seat. The first airbag module is disposed within a vehicle and includes a first cushion that deploys toward a front of a passenger, and a first inflator that supplies gas to the first cushion. The second airbag module is disposed in the roof above the occupant and includes a second cushion that deploys downward and a second inflator that supplies gas to the second cushion. The controller receives state information of the seat from the sensing unit and adjusts operation or operation timing of the first airbag module and the second airbag module.

Description

Multi-front airbag for vehicle and airbag deployment system employing the same

Technical Field

The present invention relates to a multiple front airbag for a vehicle and an airbag deployment system using the same, and more particularly, to a multiple front airbag that includes a plurality of airbag modules disposed at different positions in a vehicle, and the position and operation timing of the deployed airbag are adjusted based on the degree of sliding of a seat and the degree of tilting of a seatback, thereby safely protecting a passenger.

Background

When a collision is detected by signal values obtained from various electronic devices in the vehicle, such as a collision sensor or an Electronic Control Unit (ECU), the airbag is rapidly deployed to prevent a passenger from directly colliding with the vehicle-mounted structure, and absorbs an impact transmitted from the outside to prevent the impact from being transmitted to the passenger, thereby improving safety. Typically, a front airbag for a vehicle is mounted in a steering wheel, in an instrument panel (crash pad), or in a steering handle of the vehicle.

In particular, a front airbag for a vehicle has been proposed that can prevent neck injuries by adjusting the shape of an airbag cushion deployed toward the passenger side with a conventional front airbag when the head of a passenger collides directly with a vehicle-mounted structure (e.g., a center instrument panel) or slides along the surface of the airbag in an inclined collision of the vehicle. However, when the front seat occupant slides the seat to the rear of the vehicle or tilts the seatback to the rear seat side, the occupant slides from the seat to below the instrument panel at the time of a vehicle collision to collide with the lower surface of the instrument panel. Further, even when an airbag for a passenger seat mounted in an instrument panel is deployed, the separation distance between the passenger and the fully deployed airbag is large, resulting in the passenger colliding directly with the vehicle-mounted structure, or the impact being insufficiently prevented from being transmitted from the outside to the passenger.

The foregoing is intended only to facilitate an understanding of the background of the disclosure and is not intended to mean that the disclosure falls within the scope of the prior art which has been known to those of skill in the art.

Disclosure of Invention

The present disclosure provides a multiple front airbag for a vehicle and an airbag deployment system using the same, which may include a plurality of airbag modules provided at various positions within a vehicle for passengers of all seats, and the positions and/or operation timings of the deployed airbags are adjusted based on the degree of sliding of the seats and the degree of tilting of a seatback, thereby safely protecting the passengers.

To achieve the object, a multiple front airbag for a vehicle according to the present disclosure may include: a first airbag module disposed within the vehicle and including a first cushion deployed toward a front of a passenger, and a first inflator configured to supply gas to the first cushion; and a second airbag module disposed in a roof above the occupant and including a second cushion that deploys downward, and a second inflator configured to supply gas to the second cushion. The second cushion may be unfolded toward the front windshield at a roof side above the passenger, and may be in a shape inflated toward the front of the passenger in a fully unfolded state.

The multiple front airbag for a vehicle may further include a third airbag module including a third cushion disposed at an upper portion of the second cushion in a roof above a passenger, and a third inflator configured to supply gas to the third cushion. The third cushion may be supported by the front windshield in the unfolded state, and the second cushion may be supported by the third cushion in front thereof in the unfolded state, so that the passenger may be loaded on the second cushion at the time of collision. The third cushion may be deployed earlier than the second cushion at the time of collision, and the second cushion may be supported by the third cushion and deployed toward the passenger side.

The second cushion may include: a primary cushion inflated by receiving gas from a second inflator; and an auxiliary cushion connected with the front portion of the main cushion to communicate with each other via a vent hole, and inflated between the front windshield and the main cushion when deployed. The second airbag module may include an active vent unit configured to regulate the opening and closing of the vent. The active ventilation unit may include: a closing tether for closing the vent by contracting an edge of the vent; and a tether cutter for cutting the closed tether to open the vent hole when the auxiliary cushion is to be deployed.

The multiple front airbag for a vehicle may further include a third cushion (instead of the second cushion) disposed on the front windshield side, and a third inflator configured to supply gas to the third cushion. The second cushion and the third cushion may be unfolded downward from the upper portion of the passenger, and when the first cushion to the third cushion are all unfolded, the third cushion, the second cushion, and the first cushion may be unfolded in sequence.

Further, a multiple front airbag deployment system for a vehicle according to the present disclosure may include: a first airbag module unit that is provided in a vehicle and includes a first cushion that deploys toward a front of a passenger, and a first inflator configured to supply gas to the first cushion; a second airbag module unit disposed in a roof above a passenger and including a second cushion that deploys downward, and a second inflator configured to supply gas to the second cushion; and a controller configured to perform operations of the first airbag module unit and the second airbag module unit or adjust operation timings of the first airbag module unit and the second airbag module unit.

The multiple front airbag deployment system for a vehicle may further include a third airbag module unit including a third cushion disposed at an upper portion of the second cushion in a roof above a passenger, and a third inflator configured to supply gas to the third cushion. The controller may be configured to receive state information of the seat, and provide a data map regarding the state of the seat, which may be classified into a front mode/rear mode based on a degree of sliding of the seat cushion, and may be classified into a normal mode, an operating mode, and a releasing mode based on a degree of tilting of the seat back.

The controller may be configured to operate the first airbag module unit to deploy the first cushion when the degree of sliding of the seat cushion is in the front mode and the degree of tilting of the seat back is in the normal mode. The controller may be configured to operate the second airbag module unit to deploy the second cushion when the degree of sliding of the seat cushion is in the rear mode and the degree of tilting of the seat back is in the normal mode. The controller may be configured to operate the second airbag module unit and then operate the first airbag module unit when the degree of sliding of the seat cushion is in the rear mode and the degree of tilting of the seatback is in the operation mode.

Further, the controller may be configured to sequentially operate the third airbag module unit, the second airbag module unit, and the first airbag module unit when the degree of sliding of the seat cushion is in the front mode or the rear mode and the degree of tilting of the seat back is in the release mode. The controller may be configured to receive status information of a passenger seated in the seat, and may be provided with a data map regarding the status information of the passenger, and the status of the passenger may be classified into a correct posture mode and a seating mode based on the seating posture of the passenger. The controller may be configured to determine the degree of inclination of the seatback as the normal mode when the state of the passenger is in the correct posture mode, so as to perform control according to the normal mode.

The multiple front airbag for a vehicle according to the present disclosure may include a plurality of airbag modules provided at various positions within the vehicle for passengers of all seats, and the position and/or operation timing of the deployed airbag may be adjusted based on the degree of sliding of the seat and the degree of tilting of the seatback, thereby safely protecting the passengers.

Drawings

The foregoing and other objects, features, and other advantages of the disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1, 2, 4, 5 and 7 are side cross-sectional views of a multiple front airbag for a vehicle according to an exemplary embodiment of the present disclosure; and

fig. 3 and 6 are top cross-sectional views of a multiple front airbag for a vehicle according to an exemplary embodiment of the present disclosure.

Detailed Description

It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein generally include motor vehicles, such as passenger automobiles including Sport Utility Vehicles (SUVs), buses, trucks, various commercial vehicles, watercraft including various boats and ships, aircraft, and the like, and include hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuels derived from non-petroleum energy sources).

While the exemplary embodiments are described as using multiple units to perform the exemplary processes, it should be understood that the exemplary processes may also be performed by one or more modules. Furthermore, it should be understood that the term controller/controller unit refers to a hardware device comprising a memory and a processor. The memory is configured to store the modules, and the processor is specifically configured to run the modules to perform one or more processes described further below.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, but the present disclosure is not limited to or by these exemplary embodiments. For reference, like reference numerals in the present specification denote substantially like elements, and may be described with reference to what is described in other drawings under these rules, and what is determined to be obvious or repeated to those skilled in the art may be omitted.

Fig. 1, 2, 4, 5 and 7 are side cross-sectional views of a multiple front airbag for a vehicle according to an exemplary embodiment of the present disclosure, and fig. 3 and 6 are top cross-sectional views of a multiple front airbag for a vehicle according to an exemplary embodiment of the present disclosure.

As shown in fig. 1, a multiple front airbag for a vehicle according to the present disclosure may include: a first airbag module 100 disposed in the vehicle and including a first cushion 110 deployed toward the front of the passenger and a first inflator 120 configured to supply gas to the first cushion 110; a second airbag module 200 disposed in the roof 20 above the occupant and including a second cushion 210 deployed downward and a second inflator 220 configured to supply gas to the second cushion 210.

Referring to fig. 1, the first airbag module 100 may include a first cushion 110 and a first inflator 120. For example, the first airbag module 100 may use a conventional airbag module disposed within the instrument panel 10, and may include an airbag cushion that deploys toward the front of the occupant and an inflator configured to supply gas to the airbag cushion. Further, in an unmanned vehicle (e.g., an autonomous vehicle), an airbag module may be mounted at the rear of a seat back and may be deployed from the front of a passenger including an instrument panel toward the rear thereof (which is the passenger side). In the following description of the present disclosure, an airbag module is disposed within the instrument panel 10 to aid in understanding the present disclosure.

The first cushion 110 of the present disclosure may be deployed toward the front of the passenger to protect the passenger. In addition, the first cushion 110 may be disposed within the instrument panel 10 when not deployed. A first end of the first cushion 110 may be connected to the first inflator 120 so as to allow gas generated from the first inflator 120 to be supplied to the first cushion 110 through the controller C at the time of a vehicle collision. The first cushion 110 may be inflated by gas to tear a portion of the instrument panel 10 and may be deployed toward the front of the passenger. In addition, a tear line for external deployment of the first cushion 110 may be formed in the instrument panel 10. The first inflator 120 may be disposed within the instrument panel 10 and ignited by the controller C to generate gas, and may be connected with the first cushion 110 to supply the generated gas to the first cushion 110.

Referring to fig. 1, the second airbag module 200 may include a second cushion 210 that deploys downward and a second inflator 220 configured to supply gas to the second cushion 210. Referring to fig. 1, 4 and 7, the second cushion 210 may be unfolded downward from the roof 20 above the passenger to protect the passenger. In addition, the second cushion 210 may be disposed within the roof 20 above the occupant when not deployed. The first end of the second cushion 210 may be connected to the second inflator 220 so as to allow gas generated from the second inflator 220 to be supplied to the second cushion 210 through the controller C at the time of a vehicle collision, so that the second cushion 210 may be inflated by the gas to tear a portion of the roof 20 and be deployed downward. In particular, the second cushion 210 may be unfolded toward the front windshield 40 at the roof 20 side above the passenger, and may be in a shape inflated toward the front of the passenger in a fully unfolded state.

In addition, the multiple front airbag for a vehicle may further include a third airbag module 300, the third airbag module 300 including: a third cushion 310 disposed at an upper portion of the second cushion 210 in the roof 20 above the passenger; and a third inflator 320 configured to supply gas to the third cushion 310. The third cushion 310 may be supported by the front windshield 40 in the unfolded state, and the second cushion 210 may be supported by the third cushion 310 in front thereof in the unfolded state, so that passengers may be loaded on the second cushion 210 at the time of collision.

As shown in fig. 2, the third cushion 310 may be deployed earlier than the second cushion 210 at the time of a vehicle collision, and thus, the second cushion 210 may be supported by the third cushion 310 and deployed toward the passenger side. Specifically, in the unfolded state, the front portion of the third cushion 310 may be supported by the front windshield 40, and the front and side surfaces of the second cushion 210 may be supported by the third cushion 310 to be unfolded toward the passenger side. In addition, the first cushion 110, the third cushion 310, and the second cushion 210 may be sequentially unfolded at the time of a vehicle collision. The lower portion of the third cushion 310 may be supported by the first cushion 110, and the front and side surfaces of the second cushion 210 may be supported by the third cushion 310 and supported by the first cushion 110 to be unfolded toward the passenger side. Referring to fig. 3, the third cushion 310 may have a shape protruding toward the left and right thereof in the unfolded state, so that the unfolded shape of the second cushion 210 is maintained all the time, and passengers are effectively protected at the time of an offset collision or an inclined collision in addition to the front collision of the vehicle.

Further, as shown in fig. 4 to 6, the second cushion 210 may include: a main cushion 211 inflated by receiving gas from the second inflator 220; and an auxiliary cushion 212 connected to the front of the main cushion 211 to communicate with each other through a vent hole 213, and inflatable between the front windshield 40 and the main cushion 211 when deployed. In particular, the auxiliary cushion 212 may be connected to the main cushion 211 to communicate with each other through the vent holes 213, and the gas supplied from the second inflator 220 to the main cushion 211 may be supplied to the auxiliary cushion 212 through the vent holes 213 so as to allow the auxiliary cushion 212 to be deployed toward the front windshield 40 side.

Further, the auxiliary cushion 212 may be inflated between the front windshield 40 and the main cushion 211 at the time of deployment so as to be supported by the front windshield 40 at the time of a vehicle collision, thereby preventing the shape of the main cushion 211 from being changed. The second airbag module 200 may include an active venting unit 400, the active venting unit 400 being configured to regulate the opening and closing of the vent 213. Specifically, the active ventilation unit 400 may include: a closure tether 410 for closing the vent hole 213 by contracting (e.g., tucking) the edge of the vent hole 213; and a tether cutter 420 for cutting the closure tether 410 to open the vent hole 213 when the auxiliary cushion 212 is to be deployed.

Referring to fig. 4, a first end of the closure tether 410 may be secured to an edge of the vent hole 213 to adjust the opening and closing of the vent hole 213, and a second end of the closure tether 410 may be secured to the tether cutter 420. Further, the deployment of the auxiliary cushion 212 may be regulated by the opening and closing of the vent holes 213, and the opening and closing of the vent holes 213 may be regulated by the controller C based on the speed and acceleration of the vehicle and the state of the seat at the time of a collision of the vehicle. For example, when the seat slides toward the rear of the vehicle and the seat back is inclined toward the rear seat side thereof at the time of a vehicle collision, the tether cutter 420 may cut off the closing tether 410 to open the vent hole 213 so that the auxiliary cushion 212 may be deployed, and the primary cushion 211 that is deployed first may be moved toward the passenger side by the deployment of the auxiliary cushion 212.

Referring to fig. 6, the vent holes 213 may include a diffuser 214, the diffuser 214 supplying gas to the auxiliary cushion 212 as a flow path connected to the main cushion 211, wherein a plurality of openings through which the gas is injected may be formed at the side of the auxiliary cushion 212. In particular, at least a portion of the diffuser 214 may be disposed within the auxiliary cushion 212, and may be formed with an opening connected with the vent holes 213 of the main cushion 211 to discharge gas to the auxiliary cushion 212 side. The opening of the diffuser 130 may be formed at the side of the auxiliary cushion 212 in a plurality of ways, with the result that the supplied gas may be more uniformly supplied without being biased to one side. Therefore, the auxiliary cushion 212 can be inflated uniformly toward the front windshield 40 side. The diffuser 214 may be configured to uniformly distribute the gas and prevent the gas from flowing back to the main cushion 211 side.

Furthermore, in another exemplary embodiment, as shown in fig. 7, the second airbag module 200 may further include: a third cushion 310 provided on the front windshield 40 side, instead of the second cushion 210; and a third inflator 320 configured to supply gas to the third cushion 310. In particular, the second cushion 210 and the third cushion 310 may be unfolded downward from the upper portion of the passenger, and when the first cushion 110 to the third cushion 310 are all unfolded, the first cushion 110, the third cushion 310, and the second cushion 210 may be unfolded in sequence.

For example, when the first to third cushions 110 to 310 are all unfolded, the first cushion 110 may be unfolded toward the front of the passenger, the rear surface of the third cushion 310 may be unfolded downward from the upper portion of the passenger while being supported by the first cushion 110, and the rear surface of the second cushion 210 may be unfolded downward from the upper portion of the passenger while being supported by the third cushion 310. For example, when the seat slides toward the rear of the vehicle and the seat back is inclined toward the rear seat side, the first to third cushions 110 to 310 may be fully unfolded at the time of a vehicle collision, and the first, third and

second cushions

110, 310 and 210 may be sequentially unfolded, so that the second cushion 210 may effectively protect the passenger.

Hereinafter, deployment control of a multiple front airbag for a vehicle according to the present disclosure will be described. As shown in fig. 1 to 7, a multiple front airbag deployment system for a vehicle according to the present disclosure may include: a first airbag module unit 100 disposed within the instrument panel 10 and including a first cushion 110 deployed toward the front of a passenger and an inflator 120 configured to supply gas to the first cushion 110; a second airbag module unit 200 disposed in a roof above a passenger and including a second cushion 210 deployed downward and a second inflator 220 configured to supply gas to the second cushion 210; and a controller C configured to perform an operation or adjust operation timing of the first airbag module unit 100 and the second airbag module unit 200. Here, the controller C may be configured to receive state information about the seat and state information of the passenger from the sensing unit S. The sensing unit S may be configured to confirm the position of the passenger or confirm the angle of the seat back and the sliding position of the seat by using a vehicle-mounted camera or other imaging device, a seat pressure sensor, a passenger weight detection sensor, ultrasonic waves, a seat sensor, or the like.

Meanwhile, each of the first and second airbag module units 100 and 200 may be identical to the first and second airbag modules 100 and 200 defined in the multiple front airbags for vehicles. In addition, the multiple front airbag deployment system for a vehicle may further include a third airbag module unit 300, the third airbag module unit 300 being identical to the third airbag module 300 defined in the multiple front airbag for a vehicle.

Further, the controller C of the present disclosure may be configured to receive state information of the seat, and may be provided with a data map regarding the state of the seat, and the state of the seat may be classified into a front mode and a rear mode based on the degree of sliding of the seat cushion, and may be classified into a normal mode, an operating mode, and a releasing mode based on the degree of tilting of the seat back. The front mode in the seat state is a state in which the seat cushion moves toward the vehicle front side and the rear mode moves toward the vehicle rear side, and these modes may be set in advance to a range in which the passenger can be protected according to the position of the seat cushion when the cushion is deployed. Further, the normal mode in the seat state may be a state in which the angle of the seat back is adjusted toward the front of the vehicle so that the passenger sits in the driving posture or the correct posture, the operating mode may be a state in which the angle of the seat back is adjusted more rearward than the normal mode, and the releasing mode may be a state in which the angle of the seat back is adjusted more rearward than the operating mode so that the passenger sits in the lying posture. Various modes based on the degree of inclination of the seatback may be preset to a range in which the passenger can be protected according to the angle of the seatback.

Specifically, when the sliding degree of the seat cushion is in the front mode and the tilting degree of the seat back is in the normal mode, the controller C may be configured to operate the first airbag module unit 100 to deploy the first cushion 110. In other words, when the state of the seat is in the front mode and the normal mode, the occupant seated in the seat is located near the instrument panel 10 (which is the front side of the vehicle), so that only the first airbag module unit 100 is operated to deploy the first cushion 110. As a result, only the first cushion 110 can be deployed to protect the passenger, thereby rapidly protecting the passenger and preventing the passenger from being injured by excessive inflation force.

Meanwhile, when the sliding degree of the seat cushion is in the rear mode and the tilting degree of the seat back is in the normal mode, the controller C may be configured to operate the second airbag module unit 200 to deploy the second cushion 210. In other words, when the state of the seat is in the rear mode and the normal mode, the occupant seated in the seat is relatively spaced farther from the instrument panel 10 (which is the front side of the vehicle), so that only the second airbag module unit 200 is operated to deploy the second cushion 210. As a result, even when the passenger is spaced apart from the instrument panel 10, the second cushion 210 deployed at the front windshield 40 can be rapidly deployed toward the passenger side, thereby stably protecting the passenger.

Meanwhile, when the state of the seat is in the rear mode and the degree of inclination of the seatback is in the operation mode, the controller C may be configured to operate the second airbag module unit 200 and then operate the first airbag module unit 100. In other words, when the state of the seat is in the rear mode and the operation mode, the seat cushion slides rearward, and the angle of the seatback is further inclined rearward, so that the passenger is located at a position farther apart from the dashboard 10 side. Accordingly, the controller C may be configured to operate the first airbag module unit 100 to deploy the first cushion 110 while operating the second airbag module unit 200 to deploy the second cushion 210, such that the second cushion 210 deployed at the front windshield 40 is supported toward the passenger side by the first cushion 110, thereby stably protecting the passenger by the second cushion 210.

Meanwhile, when the degree of sliding of the seat cushion is in the front mode or the rear mode and the degree of tilting of the seat back is in the release mode, the controller C may be configured to sequentially operate the third airbag module unit 300, the second airbag module unit 200, and the first airbag module unit 100. As described above, when the state of the seat is in the rear mode and the release mode, the seat cushion slides rearward and the angle of the seatback is fully inclined toward the rearmost thereof, so that the passenger is seated in the bed position. Accordingly, the controller C may be configured to operate the second airbag module unit 200 to deploy the second cushion 210 while operating the third airbag module unit 300 to deploy the third cushion 310, and thus, the second cushion 210 may be supported toward the passenger side by the third cushion 310. In this case, the controller C may be configured to operate the first airbag module unit 100 to deploy the first cushion 110, thereby causing the second cushion 210 to deploy toward the passenger side through the first cushion 110, thereby stably protecting the passenger in the prone position through the second cushion 210.

Meanwhile, the controller C may be configured to receive state information of a passenger seated in the seat, and may be provided with a data map regarding the state information of the passenger, and the state of the passenger may be classified into a correct posture mode and a seating mode based on the seating posture of the passenger. In particular, the controller C may be configured to receive status information of the passenger by using a visual sensor. The correct posture mode is a state in which the occupant is in a driving posture or a correct posture regardless of the angle of the seat back, and the seating mode is a state in which the occupant sits in the seat according to the angle of the seat back. Accordingly, the controller C may be configured to determine the degree of inclination of the seat back as the normal mode when the state of the passenger is in the correct posture mode, so as to perform control according to the normal mode.

As described above, when the seating posture of the passenger is in the correct posture mode detected using the sensor unit S, the passenger can maintain the seating posture regardless of the position of the seat back, and the controller C can be configured to detect the degree of inclination of the seat back as the normal mode so as to perform control according to the normal mode. As a result, even when the state of the seat is in the relaxed mode, the cushion pad can be deployed based on the control corresponding to the correct posture mode when the state of the passenger is in the correct posture mode, thereby preventing the passenger from being injured due to the excessive deployment of the cushion pad and stably protecting the passenger. The body shape of the passenger may be further divided into an adult mode and a child mode according to the size of the passenger, and the deployment force may be variably controlled by adjusting the amount of gas deployed to the cushion pad.

Meanwhile, referring to fig. 4 to 6, the second cushion 210 may include: a main cushion 211 inflated by receiving gas from the second inflator 220; and an auxiliary cushion 212 connected to the front of the main cushion 211 to communicate with each other through a vent hole 213, and inflated between the front windshield 40 and the main cushion 211 when deployed. The controller C may be configured to operate the second airbag module unit 200 to deploy the second cushion 210 when the degree of inclination of the seatback is in the normal mode or the operation mode regardless of the degree of inclination of the seat, and the speed or acceleration of the vehicle is low at the time of a vehicle collision.

Referring to fig. 4 to 6, the second cushion 210 may include: a main cushion 211 inflated by receiving gas from the second inflator 220; and an auxiliary cushion 212 connected to the front of the main cushion 211 to communicate with each other through a vent hole 213, and inflated between the front windshield 40 and the main cushion 211 when deployed. The controller C may be configured to operate the second airbag module unit 200 to deploy the second cushion 210 and then operate the first airbag module unit 100 to deploy the first cushion 110 when the degree of inclination of the seat back is in the normal mode or the operation mode and the speed or acceleration of the vehicle is high at the time of a vehicle collision.

Referring to fig. 4 to 6, the second cushion 210 may include: a main cushion 211 inflated by receiving gas from the second inflator 220; and an auxiliary cushion 212 connected to the front of the main cushion 211 to communicate with each other through a vent hole 213, and inflated between the front windshield 40 and the main cushion 211 when deployed. The controller C may be configured to sequentially operate the third airbag module unit 300, the second airbag module unit 200, and the first airbag module unit 100 to sequentially deploy the third cushion 310, the second cushion 210, and the first cushion 110 when the state of the seat is in the rear mode and the degree of inclination of the seat back is in the release mode.

Referring to fig. 7, the third airbag module unit 300 may include a third cushion 310 disposed at the front windshield 40 side (instead of the second cushion 210), and a third inflator 320 configured to supply gas to the third cushion 310, and the second cushion 210 and the third cushion 310 may be deployed downward from the upper portion of the passenger. The controller C may be configured to operate the first airbag module unit 100 to deploy the first cushion 110 when the state of the seat is in the rear mode and the tilting degree of the seatback is in the normal mode.

Referring to fig. 7, the third airbag module unit 300 may include a third cushion 310 (instead of the second cushion 210) disposed on the front windshield 40 side, and a third inflator 320 configured to supply gas to the third cushion 310, and the second cushion 210 and the third cushion 310 may be deployed downward from the upper portion of the passenger. The controller C may be configured to operate the first airbag module unit 100 to deploy the first cushion 110 and then operate the second airbag module unit 200 to deploy the second cushion 210 when the state of the seat is in the rear mode and the tilting degree of the seatback is in the operation mode.

Referring to fig. 7, the third airbag module unit 300 may include a third cushion 310 (instead of the second cushion 210) disposed on the front windshield 40 side, and a third inflator 320 configured to supply gas to the third cushion 310, and the second cushion 210 and the third cushion 310 may be deployed downward from the upper portion of the passenger. The controller C may be configured to sequentially operate the third airbag module unit 300, the second airbag module unit 200, and the first airbag module unit 100 to sequentially deploy the third cushion 310, the second cushion 210, and the first cushion 110 when the state of the seat is in the rear mode and the degree of inclination of the seat back is in the release mode.

Claims

1. A multiple front airbag for a vehicle, comprising:

a first airbag module that is provided in a vehicle and that includes a first cushion that deploys toward a front of a passenger, and a first inflator configured to supply gas to the first cushion; and

a second airbag module disposed in a roof above a passenger and including a second cushion deployed downward, and a second inflator configured to supply gas to the second cushion,

wherein the second cushion pad comprises: a primary cushion inflated by receiving gas from the second inflator; and an auxiliary cushion connected with a front portion of the main cushion to communicate with each other through a vent hole and inflated between the front windshield and the main cushion when deployed,

wherein the second airbag module includes an active venting unit configured to regulate opening and closing of the vent,

wherein the active ventilation unit comprises: a closure tether for closing the vent by constricting an edge of the vent; and a tether cutter for cutting the closure tether to open the vent hole when the auxiliary cushion is to be deployed.

2. The multiple front airbag for a vehicle according to claim 1, wherein the second cushion is deployed toward a front windshield on a roof side above a passenger, and is in a shape inflated toward a front of the passenger in a fully deployed state.

3. The multiple front airbag for a vehicle according to claim 2, further comprising:

a third airbag module including a third cushion disposed at an upper portion of the second cushion in a roof above a passenger, and a third inflator configured to supply gas to the third cushion.

4. A multiple front airbag for a vehicle according to claim 3, wherein the third cushion is supported by the front windshield in a deployed state, and the second cushion is supported by the third cushion in front thereof in a deployed state, so that a passenger is loaded on the second cushion at the time of collision.

5. The multiple front airbag for a vehicle according to claim 4, wherein the third cushion deploys earlier than the second cushion, which is supported by the third cushion and deploys toward a passenger side, at the time of a vehicle collision.

6. The multiple front airbag for a vehicle of claim 1, further comprising:

a third cushion provided on the front windshield side, and a third inflator configured to supply gas to the third cushion.

7. The multiple front airbag for a vehicle according to claim 6, wherein the second cushion and the third cushion are deployed downward from an upper portion of a passenger, and the third cushion, the second cushion, and the first cushion are sequentially deployed when the first cushion to the third cushion are all deployed.

8. A multiple front airbag deployment system for a vehicle, comprising:

a first airbag module unit that is provided in a vehicle and includes a first cushion that deploys toward a front of a passenger, and a first inflator configured to supply gas to the first cushion;

a second airbag module unit disposed in a roof above a passenger and including a second cushion that deploys downward, and a second inflator configured to supply gas to the second cushion;

a controller configured to perform operations of the first airbag module unit and the second airbag module unit or adjust operation timings of the first airbag module unit and the second airbag module unit; and

a third airbag module unit including a third cushion disposed at an upper portion of the second cushion in a roof above a passenger, and a third inflator configured to supply gas to the third cushion,

wherein the controller is configured to receive state information of the seat and is provided with a data map regarding the state of the seat, the state of the seat being divided into a front mode and a rear mode based on a degree of sliding of the seat cushion and into a normal mode, an operating mode and a relaxing mode based on a degree of tilting of the seat back.

9. The multiple front airbag deployment system for a vehicle of claim 8, wherein the controller is configured to operate the first airbag module unit to deploy the first cushion when the degree of sliding of the seat cushion is in a front mode and the degree of tilting of the seat back is in a normal mode.

10. The multiple front airbag deployment system for a vehicle of claim 8, wherein the controller is configured to operate the second airbag module unit to deploy the second cushion when the degree of sliding of the seat cushion is in the rear mode and the degree of tilting of the seat back is in the normal mode.

11. The multiple front airbag deployment system for a vehicle of claim 8, wherein the controller is configured to operate the second airbag module unit and then operate the first airbag module unit when the degree of sliding of the seat cushion is in the rear mode and the degree of tilting of the seatback is in the operation mode.

12. The multiple front airbag deployment system for a vehicle of claim 8, wherein the controller is configured to sequentially operate the third airbag module unit, the second airbag module unit, and the first airbag module unit when the degree of sliding of the seat cushion is in a front mode or a rear mode and the degree of tilting of the seatback is in a relaxed mode.

13. The multiple front airbag deployment system for a vehicle of claim 8, wherein the controller is configured to receive status information of a passenger seated in the seat and to set a data map of the status information of the passenger, the status of the passenger being classified into a correct posture mode and a seating mode based on the seating posture of the passenger.

14. The multiple front airbag deployment system for a vehicle according to claim 13, wherein the controller is configured to determine the degree of inclination of the seat back as a normal mode when the state of the occupant is in a correct posture mode, so as to perform control according to the normal mode.